There seems to be a bug in the media manager, where the resulting trimmed clips are just a few Kb.
The timeline is straightforward; a stringout of h264 .mp4's. The only thing "un-standard" would be that they are 25fps clips on a 23.98 timeline. Otherwise very straightforward edit, no speedwarps or anything fancy.
I tried the media manager with and without handles, relinking to new files. The projected size was 1Gb, and the actual result was 20Mb of invalid files.
Here is the before trim and after trim project, with the resulting trimmed media.
https://drive.google.com/drive/folders/ ... sp=sharing